Sailfish are two species of fish in the genus Istiophorus who live in warm waters of the oceans of the world. Many sailfish blue-gray and has a dorsal fin erect a screen similar to the ship. Another important characteristic is the elongated snout, like a swordfish snout. Sailfish are the fastest fish, can swim up to speeds of 110 kilometers per hour
Dorsal fin usually folded when swimming, but could rise if the fish screen feels threatened or is being excited, making it appear larger than actual size. This strategy can also be observed at meals, when a group of sailfish use their sails fins to "herding" a group of fish or squid.
Sailfish can transform his body into light blue with yellow stripes to confuse their prey and to signal other sailfish
Source : id.wikipedia.com
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